Sizing material



Patented July 12, 1932 un rue srArrs mam-Fm whe eas a. SHELTON, orsen EB-ANQISQQ,

enemas A- llama. or an raanc s e. cemrearra catrrqame Assam or Qua-3am m SIZING MATERIAL should be waterproof, flexible and: unaffected by sunlight. The sizings now used for covering window shades comply With neither of these requirements and further than this the application of sizings nowin, general useare subject to numerous difficulties and objec tions, For example, since such sizings readily absorb moisture, it; is necessary in damp weather that the plants in which such sizing is applied to shades or other materials, be heated, for otherwise it has been found that the sizing absorbs a sufficient amount of moisture to hinder it from properly drying. Again, on days in which the temperature rises above 84 F. it has been found that the sizing ordinarily used evaporates and dries so quickly that it is impossible to properly apply it. This necessitates that the plant be shut down during such Weather, and, therefore, materially increases the cost of operation, as likewise does the necessity of heating the plant in damp Weather.

In general it is the object of this invention to provide a sizing 'by which a flexible,

weather and water resistant material may be made, and which may be applied under all normal weather conditions.

More specifically, the object of my invention is the provision of a water resistant sizing containing casein, borax animal glue,

para-formaldehyde and tung oil.

The invention possesses other advantageous features, some of which With the foregoing will be set forth at length in the following description. It is to be understood, however, that the scope of my invention is to be limited only by the claims appended to this specification and the prior art. i

The sizing of my invention consists of two phases intimately mixed at a temperature of substantially F. It is thinned with Water at this same temperature to any desired consistency and heated to a temperature of sub stantially F. for application to shade or other materials. I

The first phase is made as follows :Two gallons of China Wood or tung oil are treated 1928'. Serial in. 293,789;

t0v a emperature at 5 0 I4- The oil a-trea e is then mixed i h e peun o ighty me h a e eight. a d a qua er p unds Qt barx,- nd one ou ce o par -f rmaldehyde: Th s mixture is then continuously stirred with the dd n of Wa r at a mp ratur i ub: stantially-125 F. in a, suliicient amountto sor h mi ture form; a hi k paste l/Vhen this paste hasbeen stirred to; a uniform consistency, it is-allowedto stand forseveral.

hours, aPP mat y hr e- At the and: at

this time an exothermic chemical reaction will;

be found to have taken place anddueto its exothermic character the temperature of the pa t w b fou d: m b appr ximately 12591.

The c n Pha of my izine' time up! while the first phase orpasteis being al lowed to stand and is made as follows Twentythree pounds of hide glue and'thir-' een pou ds o on g ue are mixed Wltll and allowed o a sor ve-ga on of cold? Wate is p o ss should: n take longer t an 1 hre 0 four hours. After having allowed he. g t ta d for seve a 'hq rs it h at d to a temperature of approximately- 1259 15.,

Ne dless o ay, bo hide and b nrej gl ar f the an al var y@ he hide g u vu led- Th t p se (th hi k pa te formed-by rre p ry le e -y w h W atis k wni i the a ein, borax, rmal hyde a d tung oil) is then added to the second'phase (animal p ace a t mp rature 15 appr ximately 125- Th r s lt g ng hen e hinne l o. any de ir d c ns tencyfor app ication, It has b n foun hat about fiftrs g l ns of sizing will be produced. by the various in; red 'ent i mi the quanti s bove stated? v v The act on of or x and,- formaldehyde on he ca ein seems Q be me 'Qr lessgeii lly nder oo nd o h r su able materials to i the dis o ns nd hardening etf he as in anb u edt has been found the,

p opo t ns of a l o h ngrediente-u ed are ather critical a d cannothere-.fQre-be aried 85 glue), This addition as t QQve stated takes irreversible, as far as the applicant is aware this has never before been done with an animal glue. I r

Shades covered with a sizing 'made up according to the aboverecipe are found to be waterproof, unaffected by sunlight and capable of being 'bent'and creased without any apparent injury. Furthermore, it has been found out that this sizing willnot absorb water and therefore may' beapplied ]'u'st as readily in damp weather as in dry weather; The rate of evaporation is suifi ciently low to permit of its being readily applied at atmospheric temperatures well above 84 F.

V I claim:

1. A waterresistant sizing containing the following ingredients in substantially the proportions stated: two gallons of tung oil,

ten pounds of casein, eight pounds of borax,

six pounds of animal glue.

. 2. A water resistant sizlng vcontaining the following ingredients in substantially the one ounce of para-formaldehyde and thirtylowing the paste so formed to stand for several hours; adding said paste to thirty-six pounds of animal glue soaked in five gallons of water and in then thinning the sizing so formedwith water to any desired consistency for application.

6. The-process of making a water resistant sizing comprising the following steps; mixing heat treated tung oil with casein, borax, formaldehyde and hot water to form a thick paste; allowing'the paste'so formed to stand for several hours; adding to said paste. a

water absorbed animal glue at a temperature of substantially 125 F. and in then thinning the sizing so formed with water at substantially 125 F. to any desired consistencylfor application.

7. The process of forming a water resistant L slzing comprising adding a mixture of tung oil, casein, borax and formaldehyde, when at a temperature of approximately 125 F. to a liquid mass of water-soaked animal: glue when'at a substantially similar temperature and then thinning the mixturethus formed by the addition'of water heated to substan-* tially the same temperature.

In testimony whereof, I have my hand.

THO A E. sn IiToN.,

hereunto 'set proportions stated: two gallons of tungoil,

ten pounds of casein, eight pounds of borax, one ounce of para-formaldehyde, twentythree pounds of hide glue and thirteen poundsof bone glue. V i

3. The process of making a water resistant sizing comprising the following steps mixing heat treated tung oil. with casein, borax, formaldehyde and water to form a thick'paste, allowing the paste so formed to stand for several hours; adding a hot, water soaked animal glueto said paste and in then thinning the mixtureso formed with water' to any desired consistency for application.

4. The process of making a water resistant sizing comprising the following steps mixing'heat treated tung oil with casein, borax,

formaldehyde and water to form a thick paste allowing thepaste so formedto stand for several hours adding said paste to a hot water soaked animal glue and in then thinning the mixture so formed withwater to any desired consistency for application.

5. The processofmaking a water resistant sizing'comprising. the" following. steps; mix.-

7 7 ing two gallons ofheat treated tung oil with ten pounds of ecasein,'eight pounds of borax soap chips, one ounce of para-formaldehyde and sufficient water to'form a thick paste; al- 

